This textbook has been designed to meet the needs of B.Sc. (Hons.) Third Semester students of Zoology as per the new UGC Model Curriculum - Choice Based Credit System (CBCS). Comprehensively written, it explains the essential principles, processes and methodology of Chordata, Physiology and Biochemistry. This textbook is profusely illustrated with well-drawn labelled diagrams, not only to supplement the descriptions, but also for sound understanding of the concepts.

HMS Beagle has entered the collective imagination as the ship that carried Charles Darwin to the Galapagos, triggering his later work on the theory of natural selection. This book presents the accounts of the two Beagle voyages, written by the ships' captains Robert Fitzroy and Phillip Parker King.

Molecular biology has revolutionized our understanding of animals and their evolution. In this Very Short Introduction, Peter Holland provides an authoritative summary of the modern view of animal life, its origins, and the new classification resulting from DNA studies.